D12121323331322331313232223132313231333132313223313233313123111   >>    D1212132333132233131323222313231323133313231322331323331312311   <<    D12121323331322331313232223132313231333132313223313233313123113   >>      D12121323331322331313232223132313231333132313223313233313123112   >>